Key result
Slow pathway RFCA for AVNRT triggers adjacent focal atrial tachycardia in a single patient.
Case Report (n=1)
Highlights a rare proarrhythmic effect of radiofrequency ablation for AVNRT, where a new focal atrial tachycardia can originate near the ablation site and be successfully treated with a second ablation.
New focal AT near prior AVNRT ablation site may require repeat ablation; case report leaves open incidence and prevention.
Radiofrequency catheter ablation is now the first line treatment for atrioventricular nodal reentrant tachycardia. The success rate is high with a low incidence of complications. However, a possible proarrhythmic effect of radiofrequency energy has been rarely reported and no study has demonstrated a direct correlation between the anatomic site of the radiofrequency application and the origin of a new post-ablation arrhythmia. We present a case of a focal atrial tachycardia that occurred after slow pathway radiofrequency catheter ablation for atrial nodal reentrant tachycardia and originating close to the previous ablation site. This tachycardia was successfully treated with a second ablation session.
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Beninati et al. (2010) conducted a case report in Atrioventricular nodal reentrant tachycardia (n=1). Slow pathway radiofrequency catheter ablation was evaluated on Development of focal atrial tachycardia. Slow pathway radiofrequency catheter ablation for atrioventricular nodal reentrant tachycardia caused a focal atrial tachycardia originating close to the ablation site in a single patient.
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